How to learn cycling, the easiest way for a man (52) who didn't have time to learn when he was a boy!?

Question

Parents too didn't bother about that due to pre-occupations.

Answer 1

Training wheels?

Answer 2

You can do it the way I learned.  Put the seat low enough so you can touch the ground with both feet.  Push yourself along until you learn to get your balance then try it on a small slope, then try to pedal.